Slate-pencil sharpener



(No Model.) w

T. J. MANNING.

' SLATE PENCIL SHARPENBR. No. 378,329. Patented Feb. 21, 1888.

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rurrnn STATES Pnrnnr THOMAS J. MANNING, OF GRAFTON, MASSACHUSETTS.

SLATE-=PENCIL. SHARPENER.

SPECIFICATION forming part of Letters Patent No. 378,329, dated February2]., 1888.

Application filed November 21, 1887. Serial No. 255,686. (No model.)

To all whom, it may concern.-

Be it known that I, THOMAS J MANNING, a citizen of the United States,residing at Grafton, in the county of Worcester and State ofMassachusetts, have invented certain new and useful Improvements inSlate-Pencil Sharpeners; and I do hereby declare that the following isafull, clear,and exact description thereof, which, in connection with thedrawings making a part of this specification, will enable others skilledin the art to which my invention belongs to make and use the same.

My invention relates to slate-pencil sharpeuers; and the object of myinvention is to produce a very cheap and serviceable sharpener whichshall have sharpening-surfaces on all sides thereof.

My invention consists in certain novel features of construction of aslate-pencil sharpener, as will be hereinafter fully described.

Referring to the drawings, Figure 1 is a perspective view of my improvedsharpener, and Fig. 2 is an end view thereof.

In the accompanying drawings, 1 is my improved sharpener, consisting ofa block of wood, 2, made in one piece, of X shape in cross section, andhaving four \I shaped grooves, 3, extending longitudinally therein, oneon each side, from end to end, and parallel to each other. Theprojecting parts 4, extending out in opposite directions from thecentral part of the block 2, are preferably made of angular shape attheir ends, so that there will be flat surfaces 5, upon which the block2 may squarely and firmly rest. (See Figs. 1 and 2.)

The Vshaped grooves 8 in the block 2 are coated or covered with asharpening or abrading material, preferably fine sand or emerypowder, 6,which I have shown in the drawings as covering and coating all of theblock except the ends thereof.

The emery-powder, 6, is made to adhere to the block 2 by means of thinglue or other adhesive material, which is first spread over all of thesurface of the block 2, and more especially in the V-shaped grooves 3,in which the slate-pencil to be sharpened is moved back and forth.

If preferred, the flat surfaces 5 on the projecting parts 4 may be leftfree of the emerypowder or other abrading material, in order that thesharpener may not scratch or mar whatever it is placed upon.

The great advantage of my improved slate pencil sharpener is that Iprovide four separate sharpening surfaces, so that when one wears outthe sharpener is turned a quarter of a revolution and a second surfaceis presented, and so on; and, further, my improved sharpener can be madevery cheaply in the following manner: A long square strip of wood is runthrough a molding-machine, which cuts it into the shape shown incross-section. Said strip is then cut up into the lengths desired foreach sharpener and dipped into glue or other adhesive material, and thenemery-powder or other abrading material is applied thereto, and thesharpener is finished and ready for immediate use.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

As a new article of manufacture, a slatepencil sharpener consisting of ablock, 2, of X shape in cross-section, and having four longitudinalVshaped grooves therein coated with abrading material, and projectingparts 4, extending out in opposite directions from the central part ofsaid block, and provided with angular ends, for the purpose stated,substantially as shown and described.

THOMAS J. MANNING.

WVitnesses:

J OHN G. DEWEY, GLARANCE M. DICKINSON.

